DFW05LA190 · Bell 47G-4A
Custom Air Bell 47G-4A · Accident: loss of engine power while maneuvering
From Manilla, AR to Black Oak, AR
Event
- NTSB case
- DFW05LA190
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Bell 47G-4A
- Aircraft type
- Bell 47
- Category
- Helicopter
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N4087L
- Operator
- Custom Air
- Onboard fatalities
- Unknown
- Route
- From Manilla, ARTo Black Oak, AR
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 137: Agricultural
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Maneuvering · aerial application
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Loss of engine power
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Reason for occurrence undetermined
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The 10,370-hour commercial pilot was spraying the south end of a cotton field on a easterly heading at approximately 10 feet above the ground, when he heard the "engine [make] a surge in power." The pilot then scanned his engine instruments to see if he was having a problem, and all instrument indications were normal. The pilot then increased collective pitch after the helicopter began to lose altitude; however, the helicopter could not gain altitude. The helicopter impacted the ground in a level attitude, bounced into the air and began turning to the left. The pilot added left cyclic and thought he had the helicopter under control, when the left spray boom hit the cotton plants and started pulling the helicopter into the cotton. The helicopter subsequently "snapped" to the right and "started to tumble." The helicopter impacted terrain and came to rest on its right side. The reason for the reported engine power surge could not be determined.
Probable cause
The loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DFW05LA190
- Event ID
- 20050818X01272
- Case number
- DFW05LA190
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 04db989c2be7c4bd56188a8e021527e6a0e1e5e4ca7a5abbadc81e7ec6751416; retrieved 2026-09-22T05:38:59.043Z.